[ALPS03869840] Add selinux for graphic debug prop

[Detail]
Relable vendor defined debug property for android P
and label the following property:
1. vendor.debug.sf
2. vendor.debug.hwc
3. vendor.debug.bq

MTK-Commit-Id: 597f4da4e53b1d45c556895e0d85bdb3c6cd80a1

Change-Id: Iaa311f9049a519bd891a45f2b2ca73a61861e353
CR-Id: ALPS03869840
Feature: [Module]SurfaceFlinger/HWComposer